8.3k citations · 11.6k across the 74 of their papers we have counts for
74 papers
Measurement of the O Photodetachment cross-section in the electrostatic storage ring FLSR
Oliver Forstner, Thorben Niemeyer, Andrey I. Bondarev +10
The achievable precision of photodetachment studies via tunable laser light has been investigated on circulating oxygen anions at the room-temperature electrostatic low-energy stor…
Selective Bond Breaking in CO Induced by Photoelectron Recoil
J. Weiherer, N. Melzer, M. Kircher +16
After core-ionization of CO, typically an Auger-Meitner decay takes place, leading to the formation of a dicationic molecule that may dissociate into CO and O. We demon…
Role of the Coulomb Potential in Compton Scattering
N. Melzer, M. Kircher, A. Pier +18
We report a fully differential study of ionization of the Ne L-shell by Compton scattering of 20 keV photons. We find two physical mechanisms which modify the Compton-electron emis…
Ultrafast Kapitza-Dirac effect
Kang Lin, Sebastian Eckart, Hao Liang +8
Similar to the optical diffraction of light passing through a material grating, the Kapitza-Dirac effect occurs when an electron is diffracted by a standing light wave. In its orig…
Sub-cycle resolved strong field ionization of chiral molecules and the origin of chiral photoelectron asymmetries
M. Hofmann, D. Trabert, A. Geyer +9
We report on strong field ionization of S- and R-propylene oxide in circularly polarized two-color laser fields. We find that the relative helicity of the two single color laser fi…
Ideal Two-Color Field Ratio for Holographic Angular Streaking of Electrons
D. Trabert, A. Geyer, N. Anders +7
We study strong field ionization of molecular hydrogen in highly intense co-rotating two-color (CoRTC) laser fields. The measured electron momentum distributions show alternating h…
Angular dependence of the Wigner time delay upon strong field ionization from an aligned p-orbital
D. Trabert, N. Anders, A. Geyer +7
We present experimental data on the strong-field ionization of the argon dimer in a co-rotating two-color (CoRTC) laser field. We observe a sub-cycle interference pattern in the ph…
Experimental fingerprint of the electron's longitudinal momentum at the tunnel exit in strong field ionization
A. Geyer, D. Trabert, M. Hofmann +7
We present experimental data on the strong field tunnel ionization of argon in a counter-rotating two-color (CRTC) laser field. We find that the initial momentum component along th…
Ion and Electron Momentum Distributions from Single and Double Ionization of Helium Induced by Compton Scattering
M. Kircher, F. Trinter, S. Grundmann +18
We present the momentum distributions of the nucleus and of the electrons from double ionization of the helium atom by Compton scattering of photons with keV. We find that…
Magnetic-field effect in high-order above-threshold ionization
Kang Lin, Simon Brennecke, Hongcheng Ni +15
We experimentally and theoretically investigate the influence of the magnetic component of an electromagnetic field on high-order above-threshold ionization of xenon atoms driven b…
Photoelectron energy peaks shift against the radiation pressure in strong field ionization
Kang Lin, Sebastian Eckart, Alexander Hartung +8
The photoelectric effect describes the ejection of an electron upon absorption of one or several photons. The kinetic energy of this electron is determined by the photon energy red…
Measuring the photoelectron emission delay in the molecular frame
Jonas Rist, Kim Klyssek, Nikolay M. Novikovskiy +22
If matter absorbs a photon of sufficient energy it emits an electron. The question of the duration of the emission process has intrigued scientists for decades. With the advent of…
Non-adiabatic Strong Field Ionization of Atomic Hydrogen
Daniel Trabert, Nils Anders, Simon Brennecke +7
We present experimental data on the non-adiabatic strong field ionization of atomic hydrogen using elliptically polarized femtosecond laser pulses at a central wavelength of 390 nm…
Fourfold Differential Photoelectron Circular Dichroism
K. Fehre, N. M. Novikovskiy, S. Grundmann +28
We report on a joint experimental and theoretical study of photoelectron circular dichroism (PECD) in methyloxirane. By detecting O 1s-photoelectrons in coincidence with fragment i…
Photoelectron circular dichroism of O 1-photoelectrons of uniaxially oriented trifluoromethyloxirane: Energy dependence and sensitivity to molecular configuration
G. Nalin, K. Fehre, F. Trinter +25
The photoelectron circular dichroism (PECD) of the O 1s-photoelectrons of trifluoromethyloxirane(TFMOx) is studied experimentally and theoretically for different photoelectron kine…
High-Energy Molecular-Frame Photoelectron Angular Distributions: A Molecular Bond-Length Ruler
Isabel Vela-Peréz, Fukiko Ota, Abir Mhamdi +24
We present an experimental and theoretical study of core-level ionization of small hetero- and homo-nuclear molecules employing circularly polarized light and address molecular-fra…
Photon-momentum-induced molecular dynamics in photoionization of N at keV
M. Kircher, J. Rist, F. Trinter +16
We investigate K-shell ionization of N at 40 keV photon energy. Using a COLTRIMS reaction microscope we determine the vector momenta of the photoelectron, the Auger electron an…
Closed-loop recycling of rare liquid samples for gas-phase experiments
K. Fehre, M. Pitzer, F. Trinter +4
Many samples of current interest in molecular physics and physical chemistry exist in the liquid phase and are vaporized for the use in gas cells, diffuse gas targets or molecular…
Recoil-Induced Asymmetry of Nondipole Molecular Frame Photoelectron Angular Distributions in the Hard X-ray Regime
M. Kircher, J. Rist, F. Trinter +15
We investigate angular emission distributions of the 1s-photoelectrons of N ionized by linearly polarized synchrotron radiation at keV. As expected, nondipole contribu…
A new route for enantio-sensitive structure determination by photoelectron scattering on molecules in the gas phase
K. Fehre, N. M. Novikovskiy, S. Grundmann +28
X-ray as well as electron diffraction are powerful tools for structure determination of molecules. Studies on randomly oriented molecules in the gas-phase address cases in which mo…
Strong Differential Photoion Circular Dichroism in Strong-Field Ionization of Chiral Molecules
K. Fehre, S. Eckart, M. Kunitski +14
We investigate the differential ionization probability of chiral molecules in the strong field regime as a function of the helicity of the incident light. To this end, we analyze t…
Zeptosecond Birth Time Delay in Molecular Photoionization
Sven Grundmann, Daniel Trabert, Kilian Fehre +11
Photoionization is one of the fundamental light-matter interaction processes in which the absorption of a photon launches the escape of an electron. The time scale of the process p…
Electric Nondipole Effect in Strong-Field Ionization
A. Hartung, S. Brennecke, K. Lin +10
Strong-field ionization of atoms by circularly polarized femtosecond laser pulses produces a donut-shaped electron momentum distribution. Within the dipole approximation this distr…
Chiral photoelectron angular distributions from ionization of achiral atomic and molecular species
Andreas Pier, Kilian Fehre, Sven Grundmann +12
We show that the combination of two achiral components - atomic or molecular target plus a circularly polarized photon - can yield chirally structured photoelectron angular distrib…